What is nutrition ?
I will refer to the definition of human nutrition which consists in ingesting food and beverages and serves man to build his body and maintain the vital functions of life.
Nutrition significantly influences the constitution and good physical, physiological, spiritual and social mood of people. Conscious consuming of food and liquids (drinks) is also a human cultural and religious dimension.
The nutrients your body needs to perform vital functions are divided into 2 categories: macronutrients and micronutrients.
Macronutrients are divided into:
- Animal – meat: chicken, fish, turkey, pork, beef, etc.; eggs and dairy products. They contain essential amino acids that help with building muscles and tissues.
- Vegan – cereals: corn, oats, rye, wheat; soybeans, oilseeds, beans, dried peas and other vegetables. They provide a limited but different amount of amino acids.
Micronutrients are divided into:
- Fat-soluble vitamins – these can be stored in fatty tissues and liver, being much easier to store in the body compared to water-soluble ones1. Fat-soluble vitamins are absorbed in the intestinal tract with the help of fats (lipids). The body can store reserves of fat-soluble vitamins for several days and sometimes several months. Vitamins A, D, E and K are part of the fat-soluble category.
- Water-soluble vitamins – they do not stay in the body for a long time, being eliminated fairly quickly2. Vitamin C and all types of vitamin B are water soluble.
Fibers – Dietary fiber is a category of carbohydrates that come from plants and are classified as soluble or insoluble. Insoluble fiber helps prevent constipation and maintain a healthy digestive tract.